Bobbin drag device for spinning and like textile frames



April 16, 1935. G. FRASER tr AL 1,998,128

BOBBIN DRAG DEVICE FOR SPINNING AND LIKE TEXTILE FRAMES Filed bv. 22,1954 2 Sheets-Sheet 1 .2 Sheets-Sheet 2 G. FRASER ET AL BOBBIN DRAGDEVICE FOR srnmme AND LIKE TEXTILE-FRAMES Filed Nov. 22, 1954 April 16,1935.

Patented Apr. 16, 1935 UNITED STATES BDBBIN DRAG DEVICE FOR SPINNING ANDLIKE TEXTILE FRAMES Gordon Fraser, Norman Fraser, and John Fraser,Arbroath, Scotland Application November 22, 1934, Serial No. 754,240 InGreat Britain May 27, 1933 3 Claims.

This invention relates to bobbin drag devices for spinning and liketextile frames and has for an object to provide a construction in whichthe overhang of the bobbin spindle is reduced to a minimum.

The device according to the invention comprises a plurality ofconcentric rings including a fixed inner drag ring surrounded bysupplementary rings axially movable independently of one another intoand out of engagement with a surface or surfaces rotatable with thebobbin.

In practice, the fixed inner drag ring is constituted by a flange on thebobbin spindle.

The undersides of the movable rings, namely an outer ring and anintermediate ring, are formed with inclined surfaces engageable byprojections on a base plate so arranged that relative angular movementof said movable rings and said base plate is accompanied by axialdisplacement of said movable rings.

The intermediate and outer rings of the drag may be angularly adjustedand are so relatively disposed with respect to their inclined surfacesand to the projections on the base plate that angular adjustment of saidrings in one direction causes said rings to rise one after the other,and, conversely, angular adjustment of said rings in the oppositedirection causes them to descend one after the other.

A bobbin drag device according to the invention is illustrated in theaccompanying drawings in which Fig. 1 is a vertical section, Figs. 2 and2 fragmentary plan views, and Fig. 3 a fragmentary detail elevation.Fig. 4 is a fragmentary vertical section.

The device shown comprises three concentric rings l, 2 and 3,respectively, including an inner drag ring I constituted by a fiange onthe bobbin spindle socket 4, an angularly adjustable and axially movableintermediate ring 2 embracing the ring I, and an outer angularlyadjustable ring embracing the intermediate ring 2, and axially movableindependently of said intermediate ring 2.

Also embracing the ring I is a stationary annular base plate 5 formedwith upwardly projecting ridges 6 engageable with inclined surfaces 1 onthe undersides of the intermediate and outer rings 2, 3.

The outer rings 3 of the drag arrangements for a plurality of bobbinsare angularly adjusted by actuation of a common slide bar 3 disposedalongside said rings and operatively connected to the outer rings 3, thebar 8 being provided with pins 9 each engageable with a notch H) in theunderside of a ring 3.

Each outer ring carries a horizontal pin 3' projecting into a slot 2' inthe intermediate ring 2, so that the final stage of circular movementimparted to the outer ring 3 is communicated to the intermediate ring 2.The pin and slot engagement allows axial movement of the outer ringrelatively to the intermediate ring.

M denotes a spindle secured at its lower end in the socket 4.

Journalled on the spindle H is a spindle tube 2 to which is attached abobbon-driving platform [3 to the underside of which is fixed a disc I4of felt or other frictional material engageable by the upper annularsurfaces of the rings l, 2 and 3.

In operation, drag can be applied in one, two, three or more stages,depending on whether the disc 14 is bearing only on the inner ring I, oron the intermediate ring 2 or on the outer ring 3, the rings 2 and 3being successively raised to operative or dragging position by thetraverse of the inclined surfaces 1 across the ridges 6 on the baseplate 5.

The drivingplatform l3maybe of aluminium or light metal or it may be ofcast iron or other heavy metal for higher ranges.

The base plate 5 is held against rotation by means of a pin l5 carriedby said plate 5 and engaging a socket H5 in the bobbin lifter rail l1.

l8 denotes a bobbin impaled on the spindle tube l2, sockets H) in thebase flange of the bobbin l8 being engaged by driving pegs 20 upstandingfrom the driving platform l3.

We claim:-

1. A bobbin drag device for spinning and like textile frames comprising,a platform rotatable with the bobbin and presenting a friction surface,a bobbin spindle, a fixed drag ring in engagement with said frictionsurface, and supplementary drag rings concentric with said fixed ring,said supplementary rings being movable independently of one another intoand out of engagement with said friction surface.

2. A bobbin drag device as claimed in claim 1 in which the fixed dragring is constituted by a flange on the bobbin spindle socket.

3. A bobbin drag device for spinning and like textile frames comprisinga platform rotatable with the bobbin and presenting a friction surface,a bobbin spindle, a fixed drag ring, supplementary drag rings concentricwith said fixed ring, a base plate concentric with said rings and havingprojections on one surface thereof, the supplementary drag rings havinginclined surfaces adapted to engage said projections, and means forcausing relative angular movement of said supplementary drag rings andsaid base plate to bring about axial displacement of said supplementarydrag rings to cause same to engage with or to be disengaged from saidfricton surface.

GORDON FRASER.

NORMAN FRASER. JOHN FRASER.

